13. Loss of Tendon Reflexes: The Silent Responses of FRDA
A notable neurological symptom of Friedreich’s Ataxia is the loss of tendon reflexes. Tendon reflexes, such as the patellar or “knee-jerk” reflex, are involuntary responses controlled by the nervous system. A loss or reduction in these reflexes can signify underlying nerve damage.
Tendon reflexes are an essential aspect of our nervous system. They serve as protective mechanisms, helping us respond swiftly to situations that could potentially harm the body. For instance, the patellar reflex prevents us from buckling when standing or walking.
In FRDA, the loss of tendon reflexes signifies the damage caused by the disease to the peripheral nerves, which carry signals between the central nervous system and the rest of the body. The loss of these reflexes often occurs early in the disease, even before noticeable motor skill issues emerge, making it a critical factor in early diagnosis. (13)
